Electrical equipment manufacturers in Wisconsin
Wisconsin has 73 electrical equipment makers in EPA records, facilities that list codes for motors, transformers, switchgear, wire and wiring devices. The most are in Milwaukee, Waukesha and Pleasant Prairie. That is 3% of the 2,373 such facilities nationwide, and Wisconsin ranks #10 of 50 states.
- Product
- Electrical equipment manufacturers
- Facilities
- 73
- State rank
- #10
- NAICS
- 335311 and 8 related codes
- Revised
- November 1, 2026
Facilities in Wisconsin
These are active facilities in EPA's ECHO database that list a code for motors, transformers, switchgear, wire and wiring devices. The 40 shown first are the ones with the most EPA program records, which usually means the larger sites.
| Facility | City | What EPA lists |
|---|---|---|
| Generac Power Systems | Whitewater | Motor and Generator Manufacturing |
| Discovery Energy LLC | Mosel | Power, Distribution, and Specialty Transformer Manufacturing |
| Miller Electric Manufacturing LLC | Appleton | Power, Distribution, and Specialty Transformer Manufacturing |
| Miller Electric Mfg Co | Appleton | Power, Distribution, and Specialty Transformer Manufacturing |
| Generac Power Systems | Jefferson | Motor and Generator Manufacturing |
| Generac Power Systems | Waukesha | Motor and Generator Manufacturing |
| Generac Power Systems Inc - Eagle | Eagle | Power, Distribution, and Specialty Transformer Manufacturing |
| Generac Power Systems Inc -Oshkosh Facility | Oshkosh | Motor and Generator Manufacturing |
| The Gund Co | Waukesha | Noncurrent-Carrying Wiring Device Manufacturing |
| Beaver Dam Manufacturing | Beaver Dam | Motor and Generator Manufacturing |
| Cooper Power Systems-Transformer Product | Waukesha | Power, Distribution, and Specialty Transformer Manufacturing |
| Cooper Power Systems LLC | Waukesha | Power, Distribution, and Specialty Transformer Manufacturing |
| Tulip Richardson Manufacturing | Milwaukee | All Other Miscellaneous Electrical Equipment and Component Manufacturing |
| Baldor Electric Co | Oshkosh | Motor and Generator Manufacturing |
| Cooper Power Systems - South Milwaukee | South Milwaukee | Power, Distribution, and Specialty Transformer Manufacturing |
| Drs Naval Power Systems | Menomonee Falls | Switchgear and Switchboard Apparatus Manufacturing |
| Drs Technologies, Inc. | Milwaukee | Switchgear and Switchboard Apparatus Manufacturing |
| Mcmillan Electric Co | Woodville | Motor and Generator Manufacturing |
| Molex Hudson, Wi | Hudson | Fiber Optic Cable Manufacturing |
| Powergrid Solutions LLC | Oshkosh | Switchgear and Switchboard Apparatus Manufacturing |
| Professional Power Products Inc | Darien | Power, Distribution, and Specialty Transformer Manufacturing |
| Quick Cable Corp | Franksville | Current-Carrying Wiring Device Manufacturing |
| Rockwell Automation | Ladysmith | Relay and Industrial Control Manufacturing |
| Sl-Mti | Pleasant Prairie | Motor and Generator Manufacturing |
| Unico Inc | Caledonia | Relay and Industrial Control Manufacturing |
| ABB Inc | New Berlin | Relay and Industrial Control Manufacturing |
| Ametek Lamb Electric | Racine | Motor and Generator Manufacturing |
| Ametek Specialty Motors | Hudson | Motor and Generator Manufacturing |
| Arnold Magnetic Technologies - Technology Center | Middleton | Motor and Generator Manufacturing |
| Danfoss - Milwaukee | Milwaukee | Relay and Industrial Control Manufacturing |
| Deltrol Controls | Milwaukee | Relay and Industrial Control Manufacturing |
| Dings Co | Milwaukee | Relay and Industrial Control Manufacturing |
| Eaton Corp | Menomonee Falls | Relay and Industrial Control Manufacturing |
| Elwood Corp - Gettys Group | Racine | Motor and Generator Manufacturing |
| G & L Motion Control Inc | Fond Du Lac | Relay and Industrial Control Manufacturing |
| Generac Power Systems, Inc. | Beaver Dam | Motor and Generator Manufacturing |
| Honeywell International Inc | Pleasant Prairie | Other Communication and Energy Wire Manufacturing |
| Ingenuity Industries LLC | Pulaski | Relay and Industrial Control Manufacturing |
| Ingeteam Inc | Milwaukee | Motor and Generator Manufacturing |
| Kohler Co - Town Of Mosel Plant | Sheboygan | Motor and Generator Manufacturing |
Industry codes are reported by facilities to EPA programs and are not checked here. A few listings may be repair shops, distributors or recyclers. How these records work.
Where they are
- Milwaukee: 9
- Waukesha: 5
- Pleasant Prairie: 4
- Oshkosh: 3
- Greenville: 3
- Appleton: 2
By product code
- Motor and Generator Manufacturing (NAICS 335312): 15 of those shown
- Relay and Industrial Control Manufacturing (NAICS 335314): 9 of those shown
- Power, Distribution, and Specialty Transformer Manufacturing (NAICS 335311): 8 of those shown
- Switchgear and Switchboard Apparatus Manufacturing (NAICS 335313): 3 of those shown
- Fiber Optic Cable Manufacturing (NAICS 335921): 1 of those shown
- Other Communication and Energy Wire Manufacturing (NAICS 335929): 1 of those shown
- Current-Carrying Wiring Device Manufacturing (NAICS 335931): 1 of those shown
- Noncurrent-Carrying Wiring Device Manufacturing (NAICS 335932): 1 of those shown
- All Other Miscellaneous Electrical Equipment and Component Manufacturing (NAICS 335999): 1 of those shown
All electrical equipment and appliances manufacturing in Wisconsin: 89 facilities and Census job counts.